alert dns $HOME_NET any -> any any (msg:"ET MALWARE NEODYMIUM Wingbird DNS Lookup (srv601 .ddns.net)"; dns_query; content:"srv601.ddns.net"; depth:15; nocase; endswith; fast_pattern; reference:url,download.microsoft.com/download/E/B/0/EB0F50CC-989C-4B66-B7F6-68CD3DC90DE3/Microsoft_Security_Intelligence_Report_Volume_21_English.pdf; classtype:trojan-activity; sid:2023641; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_12_14, deployment Perimeter, malware_family NEODYMIUM_Wingbird, confidence Medium, signature_severity Major, updated_at 2019_09_28;)